Tractor shoe



June 1 ,1926. 1,586,928

W. E. WINE TRACTOR SHOE PiledApril 15'. 1925 2 sheets-sheet 1 mulini- Invn'on William E. mue,

Patented June 1, 1926.

l UNITED STTLES PATENT OFFICE.

WILLIAM E. WINE, OF' TOLEDO, OHIO, ASSIGNOR TO THE TRACTOR GRIP WHEEL COM- PANY, OF TOLEDO, O HIO, A CORFORATION 0F OHIO.

TRACTOR SHOE.

Application led April 15, 1925. Serial Ne. 23,335.

lily invention relates to new and `useful improvements in tractor shoes. and the present application is a companion of an application filed by me on April 29, 1925, hearing Serial No. 26,697.

One of the objects of the present invention is to provide a tractor shoe, and I am now speaking of the device in its most comprehensive term, that is relatively light in weight, quickly and readily assembled, and relatively cheap to manufacture.

Another object of the invention is to proride a tractor shoe wherein the tread member comprises a metal frame which may be pressed on an 8O or 100 ton press, and to provide a channel extending longitudinally f the shoe in which are riveted the two feet of a retaining member, which retaining member is adapted to pass through an opening in the rim of a wheel; also to `provide a cross bar fastened to the retaining member and positioned on the inner side of the rim to thus secure the tread member, but to allow the retaining means and tread member to rock or oscillate with reference to the rim.

In the companion application I provided a somewhat similar tread member and provided bearings to be placed on the outer surface of the rimso that the bearings would contact with the lower ends of the retaining means as the wheel revolves, but in the present instance, t-he rim of the wheel conh tracts with the upper surface ofthe shoes as the wheel revolves.

In the present invention the tread member is also shown in a modified form having a plurality of rubber feet or calks held therein so that under certain conditions this form of tread member may be used, or under other conditions the form of tread member may be used which is provided with integral and staggered teeth. i

Still another object of the invention is to provide a tractor shoe which will be exceed ingly economical in cost and construction, all of the. parts with the exception of the cross bar being stamped from sheet or bar metal, and `two of the parts then riveted, which forms an exceedingly durable, and at the same time, relativelycheap construct-ion.

Still another object of the inventionis to provide a tractor shoe which may be quickly and readily applied to the rim of a tractor wheel, regardless of its width, it simply being necessary tol `enti puta plurality of` openings about the rim of the wheel and to rivet small reinforcing plates to the undersurface of the rim to provide reinforced bearing points for the cross bar of the retaining means.

With these and other objects in view, the invention consists in certain new and novel constructions and combination of parts as will be hereinafter more ful-ly described and pointed out in the claims. l y

-Referring now to the drawings, showing a preferred embodiment of the invent-ion Fig. l is a fragmentary side elevation of a wheel showing two of my shoes in their operable position, one of the shoes being shown insection and the other of the shoes being-shown in elevation.

Fig. 2 is across sectional view of the wheel rim and a portion of the tread member, the f tread member being shown in contactwith the wheell rim and exten-ding parallel with the rim.`

Fig. 3 'is an inner plan view of the attached shoe looking from within the rim.

Fig. 4 is an end view of the tread member. Fig. 5 is a perspective of the retaining means.

vFig.V 6 is a view similar to Fig. 1 showinga modified form of tread member.

Fig. 7 is a view similar to Fig. 2 showing a modified form of tread member.

Fig. 8 is an outer plan 'view of the tread member showing the mannero-f retaining the calks in the tread member.

Fig. 9 is a cross sectional view of thetread member showing how the calks are held in place, and

Fig. V10 is a perspective of one of the calks.

Referring now more in particular to the preferred form, there 1 is fragmentarily shown a rim 1 of a wheel having the spokes 2, there being a plurality of openings 3 cut in the rim, and about these openings is riveted a` plate 4 `having `the vopenings registering with the opening 5, while rivets Gare shown for'tightlysecuring this plate to` the wheel rim. i i Adapted toextend Within the openingin therim and the opening in the plate 4, is a retaining member 7, which` is preferably `formed of sheet or bar steel and is substantially of inverted U-shape,the legsslightly ro-undingwhere they merge at -the-apex 8. The legs then extend outwardly at their ends formingthe'4 feet: 9L whichare :pros

vided with the holes l0 for the reception of rivets ll to be'shortly mentioned.

rlhe curvature of the body ot the retaining means is gradual, Whereas in my former application the legs of the retaining means were more angularly positioned than in the present application.

rlhe present curvature allows for a somewhat thicker cross bar `l2, which baris substantially triangular in shape, its sides being slightly vrounded and the bottom suri tace 'i3 is also rounded so'that it 'forms a rocking bearing on the upper edges ot' the side Walls about the opening 5 in theplate It. A bolt M passes through this cross bar l@ and is held in place bythe nut l5. The entire contacting sur'l'ace ot the cross bar is a complement ofthe contacting surface oi the retaining means so that the bar Will be tightly iitted and tightly held within the Aretaining` means and Vthe ends ot the bar, ot course, extending outwardly beyond the sides o tl the retaining means.

Referring now tothe tread member 16, it is preferably rectangular in shape, may be pressed from a blank in a large press and is so cut and bent that it will form the teeth l at its one end and the tooth 1S at its opposite end which` tooth may have the bulged portion 19 therein to add strength to the 'tooth as av Whole.

As may be clearly seen in Fig. Ll, a channel 2O is pressed centrally and longitudinally ot the shoe, While side rims 2l are provided, which merge with the several teeth. The entire tread member is apressed article and may be manufactured at a relatively low cost after the dies have once been made. rThis tread member inits preferred form,v is similar tothe tread shown in my companion application above reterred to.

As shown in the several views, the t'eet i) of the retaining member 'l' tit Within the channel, lie flush with the loiver surface ot the channel and are held in position by the aforementioned rrivets 1l. litter the retaining member is passed through the openings 3 'and 5, the lcross vbar l2 Will be bolted in'place and the retaining means andtread member 'are thus secured to the vvhe'el rim, bu't'the tread and retaining'means may oscillate or roch on the ends oit the cross bar l2 as vmay be readily understood. The height of the retaining member issuch that itmayrassumethe position shown in Fig. Za-and it Will be understood that thereis no Weight Whatever on the cross bar when the shoes are in their lowermostposit-ion. The li'fe of the crossbar 'is'therei'ore greatly lengthene-d'as the Wear is only onA this cross bar When theshocs are 'in a position other than When on the ground.

' As faras thespecilication has proceeded, it va'ill be seen that the' tivo lovver shoes-,ion revolution 'l ot the "vheel, vill 1' occupy the position shown in Fig. l and the rim of the Wheel Will bear on the 'adjacent ends of the two shoes, the rivets 6 extending Within the channel .2O so that the contacting surface ol the rim and the shoes vvillbe a smooth or iuiinterrupted one. In my companion application, bearings were shown as attached to the outer rim which passed dovvn Within the channel and the present form is a somewhat cheaper construction.

lRei'ierring now to the modiiied form of tread-member and Figs. T to lO inclusive, there is shown alrim 22 provided with the opening 23 and the plate 2li which is riveted to the rim, the retaining means 25, cross bar lian'd bolt-"2T, all ot which are similar to the preferred liorm. The tread member 2S, however, is` slightly `ditiierent in construction, it having the channel 3() in ivhichthe feet- 31 on the retaining member' are secured and instead ot having a plurality ol: teeth in staggered relation, there are shown the callrs Bheld within the outer surface ol the tread member. The opposite ends of the tread member 28 are provided With the sho-rt laterally inwardly extending flanges 3dr and these will overlap the bottom of the channel as shown at The calls 32 are each provided With the opposite rims or lianges 36, one rim ofi-each calli adapted to tit under one of the flanges Sel and two plates 37 are bolted centrally to the channel, which plates'a're also provided with the oppositely extending flanges 38 to engagerespect-ively the adjacent flangesl 3G of the calks 82. ln other Words, little retaining poclCet-s are formed for the receptionf'ot these'calls as the -side flanges of the tread member and the channel section will contact'ivit-h tuoot the ends of each calli, Whereas the end flanges 34C and the flanges $38 ou' the little-plates 37 will contact With the adjacent flanges* 36 of the call( and thereby tightly retain the same in position.

`Bolts 39 are shown for locking the little plates't' tothe tread member and it Will be readily seen that asthecalks Wear or become damaged, itis a 'comparative-ly simple matter to remove one of these plates and insert aneiv calli 32 in position.

From theforegoing it will be seenth'at I have provided a very economical form of tractor shoe wherein the tread member may rccl: oi' oscillate with regard to the rim of the Wheel, and ivhereinthe Vtread member may be of one of tvvo forms, leither With the integral steel teeth, or as shown in the n'i'oditied torni, may be provided With a plurality ot rubber calks which are securely held in place but at the same time may be quicldyiremoved if damaged, and new ones substituted for them.

Manyslight changes might be 'madevvitl'i- Vout in anyv Way'departing from'thelspirit and4 seopeof the' invention.

BES

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is l. A tractor shoe coml'n'ising` a tread member rectangular in form and having rims at its opposite ends which extend inwardly, a centrally extending channel, call( members disposed on the opposite sides of the channel and respectively engaging the Walls of said channel and engaging said aforementioned rims and removable plates disposed on the opposite sides of the channel for engaging the adjacent sides of said calks so that said callis are supported completely about their periphery, retaining means riveted to the tread member and disposed Within said channel, and adapted to be secured to a Wheel rim.

A tractor shoe comprising a tread member having a longitudinally extending channel, the end walls of said tread member having rims formed thereon and extending laterally inwardly, two calks disposed on each side of the channel and enga-ged respectively by the rims, side walls and channel walls, ren'iovable plates respectively disposed on the opposite sides ol the channel for engaging respectively the fourth wall of each calli to thereby removably lock the said calli within the tread member.

A tractor shoe comprising a tread member having a longitudinally extending channel formed in the inner surface of the tread member and the end Walls of said tread member being bent inwardly and overlapping the ends of said channel, a plurality ot' calks supported on the opposite sides of the said channel, two plates having outwardly and laterally extending feet removably secured to the outer suri'ace of said tread member for engaging respectively one side of each call( member to thereby linally tions of the tread member and removable means for engaging the fourth side of each calli to thereby finally lock all of the calls in position.

5. A tractor shoe comprising in part a tread member boiolilie in cross section and open at its tread side, a channell :'ormed in the inner surface of the tread member, a retaining member having feet fitting within the channel and riveted thereto, rubber calks fitting upwardly within the tread member and engaging the under'- i surface of the side walls of said channel, rims on the end wallspf said tread member for engaging said calls, said calks also contacting with the side walls of said tread member, and means locked to the outer suriace of said tread member for iinally locking the said calks in position.

In testimony whereof affix my signature.-

VILLIAM E. XVINE. 

